moved human to delta2human and created a new wrapper function

called human which works on datetime objects instead of timedelta objects.

Updated README to document new function usage.

README

@@ -7,9 +7,15 @@ easy_install ago
 How to use
 ==================
 
-Import ago and create a timedelta object::
+The ago module comes with three functions: 
 
- from ago import delta2dict, human
+#. human
+#. delta2human
+#. delta2dict
+
+You really only need to worry about *human*::
+
+ from ago import human, delta2human, delta2dict
  
  from datetime import datetime
 
@@ -24,25 +30,28 @@ Import ago and create a timedelta object::
    microsecond=4000
   )
 
- # this is right now
- d2 = datetime.now()
+ # to find out how long ago, use the human function
+ print 'Created ' + human( d1 ) + ' ago.'
+ 
+ # optionally pass a precision
+ print 'Created ' + human( d1, 3 ) + ' ago.'
+ print 'Created ' + human( d1, 6 ) + ' ago.'
 
- # subtract the two for a timedelta object
+Now we will document how to use delta2human and delta2dict::
+
+ # pretend we already have a timedelta object
+
+ # subtract two datetime objects for a timedelta object
+ d2 = datetime.now()
  delta = d2 - d1
 
- # create a dictionary out of the timedelta
- # not needed but accessable
+ # display a human readable timedelta from a timedelta 
+ print 'Created ' + delta2human( delta ) + ' ago.'
+
+ #  create a dictionary out of the timedelta
  delta_dict = delta2dict( delta )
  print delta_dict
 
- # display a human readable timedelta 
- print 'Created ' + human( delta ) + ' ago.'
-
- # optionally pass a precision
- print 'Created ' + human( delta, 3 ) + ' ago.'
- print 'Created ' + human( delta, 6 ) + ' ago.'
-
-
 
 How do I thank you?
 ==========================